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Int. J. Mol. Sci. 2010, 11(2), 427-457; doi:10.3390/ijms11020427

Recent Developments in Fluorescence Correlation Spectroscopy for Diffusion Measurements in Planar Lipid Membranes

J. Heyrovský Institute of Physical Chemistry of ASCR, v.v.i., Dolejškova 2155/3, 182 23 Prague, Czech Republic
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Received: 3 December 2009 / Revised: 11 January 2010 / Accepted: 15 January 2010 / Published: 28 January 2010
(This article belongs to the Special Issue Single Molecules)
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Abstract

Fluorescence correlation spectroscopy (FCS) is a single molecule technique used mainly for determination of mobility and local concentration of molecules. This review describes the specific problems of FCS in planar systems and reviews the state of the art experimental approaches such as 2-focus, Z-scan or scanning FCS, which overcome most of the artefacts and limitations of standard FCS. We focus on diffusion measurements of lipids and proteins in planar lipid membranes and review the contributions of FCS to elucidating membrane dynamics and the factors influencing it, such as membrane composition, ionic strength, presence of membrane proteins or frictional coupling with solid support.
Keywords: lateral diffusion; fluorescence fluctuation spectroscopy; confocal microscopy; biomembranes; supported lipid bilayers; giant unilamellar vesicles lateral diffusion; fluorescence fluctuation spectroscopy; confocal microscopy; biomembranes; supported lipid bilayers; giant unilamellar vesicles
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Macháň, R.; Hof, M. Recent Developments in Fluorescence Correlation Spectroscopy for Diffusion Measurements in Planar Lipid Membranes. Int. J. Mol. Sci. 2010, 11, 427-457.

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